What are the commonly used materials for wire mesh demisters?

What are the commonly used materials for wire mesh demisters?

What are the common materials for wire mesh demisters? Ningbo Tianchi Rubber & Plastic will introduce them to you below.

Common materials for wire mesh demisters produced by Ningbo Tianchi Rubber & Plastic:The specification range of wire mesh demisters is: DN300~DN5200mm (non-standard products are not limited by the specification range).

1. Stainless steel: 304, 304L, 321, 316Ti, 316L, RS-2, NS-80, 317L, 904L, 310S.

2. Titanium and titanium alloys: TA2, TA1.

3. Nickel and nickel alloys: pure nickel N6, Ni200, Ni201; Hastelloy C-276, B-2.

4. Inconel 601, 625; Incoloy 825; Alloy800, 800H; Monel 400.

5. Super duplex steel: 2507 (S32750) 2507 (UNSS32750).

6. Engineering plastics: polypropylene (PP), polyethylene (PE), polyvinyl chloride (PVC), polytetrafluoroethylene PTFE (F4), polyperfluoroethylene propylene FEP (F46), polyvinylidene fluoride PVDF (F2).

7. Glass fiber, cotton, chemical fiber.

8. Iron wire, copper wire, etc.

Introduction to the use of wire mesh demister

Wave-type wire mesh demisters are also known as wave-type demisters and corrugated demisters. In addition to meeting the new standard HG/T21618-1998 and integrating the characteristics of HG5-1404-81, HG5-1405-81, and HG5-1406-81 wire mesh demisters, they have unique advantages and characteristics:

1. The defoaming effect of the wire mesh demister is significantly improved, with gas going through the gas path and liquid going through the liquid path, without secondary entrainment.

2. The mesh block is tilted at 45 degrees, the filtration area is increased by 15%, and the airflow direction and speed can be adjusted to achieve efficient defoaming.

3.4-10mm deep corrugated embossing, one layer has the filtration efficiency of two layers, saving installation space and reducing the cost of a single tower demister.

Classification of wire mesh demisters: metal wire mesh demisters, plastic wire mesh demisters, pp wire mesh demisters, drawer-type wire mesh demisters, inlaid wire mesh demisters, top-mounted wire mesh demisters, bottom-mounted wire mesh demisters, etc.

Types of wire mesh demisters

Example 1: DN2000MM, H150MM, gas-liquid filter type SP type, material 304, grille and support material Q235-A top-mounted wire mesh demister marked as: HG/T21618-1998 wire mesh demister S 2000-150SP304/Q235-A.

Example 2: DN4000MM, H100MM, gas-liquid filter type DP type, material 316L, grille and support material 304 bottom-mounted wire mesh demister marked as: HG/T21618-1998 wire mesh demister X4000-100DP316L/304.

There are two types of wire mesh demister installation:

(1) Top-mounted (manhole is opened on the top of the demister or there is no manhole but equipment flange).

(2) Bottom-mounted (manhole is opened at the bottom of the demister) During installation, support beams, support rings, pressure strips, etc. are installed on the upper and lower parts of the mesh block according to the needs of the structural form to form a whole wire mesh demister. The

top-mounted wire mesh demister is relatively simple to install. The manhole is above the wire mesh demister. The installer places the components of the wire mesh demister one by one on the support ring and beam, and screws the upper pressure strip in place. The bottom-mounted wire mesh demister is slightly more complicated to install. The manhole is below the wire mesh demister. The installer drags the components of the wire mesh demister one by one from the opening of the bottom sealing plate into the space between the support ring and the pressure ring, and finally screws the sealing plate in place. The bottom-mounted support has one more pressure ring than the top-mounted support.

Design points of the separation tank of the wire mesh demister:

There are two structures of the separation tank: horizontal and vertical. Compared with the horizontal and vertical structures, the horizontal separation tank has a larger gas-liquid interface, which is more conducive to the precipitation of droplets, so the horizontal structure is generally recommended. There is a baffle inside the separation tank. When the gas-liquid mixture with a certain flow rate enters the separation tank, the movement speed and direction suddenly change, and the initial separation of gas and liquid is achieved by gravity precipitation. The gas outlet is set at the top of the container, and a wire mesh is set at its outlet to further separate the droplets carried away by the gas. There is an equipment flange at the discharge port. The net can be removed by removing the flange. The wire mesh should be cleaned regularly to prevent the wire mesh from being blocked and increasing resistance.